Thread storage disc for two-for-one twisting spindles

ABSTRACT

A THREAD STORAGE DISC FOR TWO-FOR-ONE TWISTING SPINDLES WITH AT LEAST ONE RADIALLY DIRECTED THREAD EXIT PASSAGE HAVING AT THE OUTER END THEREOF TWO HIGHLY WEAR RESISTANT DEVIATING MEMBERS, IN WHICH SAID THREAD EXIT PASSAGE HAS A CLOSED CROSS-SECTIONAL CONTOUR OVER ITS ENTIRE LENGTH AND CONSISTS OF ONE SINGLE PIECE WITH THE THREAD STORAGE DISC.

United States Patent Int. (:1. D6111 7/86 US. Cl. 5758.84 3 Claims ABSTRACT OF THE DISCLOSURE A thread storage disc for two-for-one twisting spindles with at least one radially directed thread exit passage having at the outer end thereof two highly wear resistant deviating members, in which said thread exit passage has a closed cross-sectional contour over its entire length and consists of one single piece with the thread storage disc.

The present invention relates to a thread storage disc, especially for two-for-one twisting spindles. With twofor-one twisting spindles, the so-called thread storage disc forms a part of the spindle rotor. The thread which is drawn from above from the delivery bobbin downwardly through the hollow shank of the spindle radially leaves the thread storage disc through a thread exit passage. This thread is then, counter to the direction of rotation of the spindle rotor, deviated about a deviating body for engagement with the thread storage section of the thread storage disc and after being looped around the thread storage section by an angle of from 180 to 360 rotates together with the spindle rotor in the form of a balloon about the stationary delivery bobbin on its upward movement to the windingup bobbin while passing through a centrally arranged thread guiding member.

The friction which occurs during the two sharp deviations of the threads by 90 during the entrance into an exit from the thread passage of the thread storage disc, may be the cause for lint. The fine fibers which here are disengaged prefer to settle within the area of the thread exit passage whereby the said thread exit passage is exposed to humidity and soiling. This soiling may, when larger soiling particles get disengaged, harmfully affect the movement of the thread, and may even soil the thread itself.

It is, therefore, an object of the present invention to provide a thread storage disc, especially for two-for-one twisting spindles, which will overcome the above mentioned drawbacks.

It is another object of the invention to provide a thread storage disc, especially for two-for-one twisting spindles, in which the thread exit passage of the thread storage disc will be so designed that a collection or deposit of lint will no longer be possible.

These and other objects and advantages of the invention will appear more clearly from the following specification in connection with the accompanying drawing, in which:

FIG. 1 is a perspective showing, partially in section, of a thread storage disc which is mounted on the whorl of the spindle rotor and which is provided with a thread rejecting disc having its outer marginal area bent upwardly.

FIG. 2 shows a section through the thread exit passage of the thread storage disc in conformity with the present invention.

FIG. 3 is a view of the spindle rotor within the area of the thread exit passage.

Starting from a thread storage disc on a two-for-one 3,564,832 Patented Feb. 23, 1971 twisting spindle with at least one radially directed thread exit passage which is delimited toward the outside by two axially directed high wear-resistant deviating bodies, the present invention is characterized primarily in that the thread exit passage is closed over its length and consists with the thread storage disc of one piece while the occurring lint can no longer deposit along the thread exit passage, but is centrifuged out of the thread exit passage whereby the otherwise necessary cleaning operations will become superfluous.

According to a further development of the present invention, especially of the thread storage disc, the thread exit passage may, according to the present invention, have a funnel-shaped cross section, and the deviating bodies may be arranged at the end of the passage in such a way that their mantle on one hand tangentially merges with the passage, and on the other hand tangentially merges with the storage section. In view of this design of the thread exit passage, the fibers which during the deviation in the spindle rotor detach themselves from the twisted threads can easily by centrifugal forces be centrifuged radially outwardly without forming handicaps or collection of dust on the walls or other parts, and without being carried along by the thread from time to time. Furthermore, in view of the funnel-shaped structure of the deviating body, the latter can be well observed in the rotor shank so that checking operations necessary, for instance, with regard to possible tears in the deviating body will be greatly facilitated. Furthermore, the threading of the thread into the thread exit passage has been greatly simplified by the design according to the invention.

Referring now to the drawing in detail, the spindle rotor is provided with a whorl 1 while the thread storage disc, generally designated with the numeral 2, has its outer marginal area provided with an upwardly curved thread rejecting disc 3, said disc 3 being firmly connected to the upper rotor end 5 by means of a clamping disc 4. Through the thread storage disc 2 there extends a substantially funnel-shaped thread exit passage 6 which in cross-section widens radially outwardly. At the ends of said passage 6 adjacent the lateral marginal areas there are arranged cylindrical highly wear-resistant bolts 7 and 8 which act as deviating bodies for the thread toward the thread section. The cylindrical highly Wear-resistant bolts 7 and 8 are arranged in axially directed bores of the thread storage disc.

The individual portions of the thread storage disc 2, namely, the disc 9 adjacent the bottom, the thread storage section 10, the hub 11, and the all-the-way around closed walls of the funnel-shaped exit passage 6 are produced as one piece, for instance, by a casting method.

As will be seen in particular from FIG. 2, the walls of the thread exit passage 6 form from the thread entrance opening 12 within the range of the hub 11 to the thread exit opening formed by the two deviating bodies 7 and 8 straight walls, the ends of which are respectively arranged adjacent the respective deviating bodies in such a way that their mantle on one hand engages approximately tangentially the respective wall of the thread exit passage 6, and on the other hand follows approximately tangentially the thread storage section 10. In view of the design of the thread exit passage 6 which has a closed cross-sectional contour over its entire length, in connection with its funnel shape and the expedient arrangement of the deviating bodies 5 and the converging areas between thread exit passage and thread storage passage, the conditions prevail that no fiber particles within the thread storage disc 2 or along the wall of said passage 6 can accumulate. Consequently, in view of the centrifugal force the fiber particles which detach themselves from the thread are safely centrifuged out of the thread exit passage 6 without affecting or soiling the thread by getting twisted into the thread in the form of fiber accumulationsv It is, of course, to be understood that the present invention is, by no means, limited to the particular construction shown in the drawing, but that also modifications are possible, and that the invention is defined by the scope of the appended claims.

What I claim is:

1. A thread storage disc for two-for-one twisting spindles, which includes: wall means defining at least one radially directed thread exit passage having a completely closed cross-sectional contour throughout its entire length, said wall means forming a single integral unitary piece with said thread storage disc, and separable highly wear resistant deviating means necessarily arranged at the outer terminating end of said thread exit passage.

2. A thread storage disc according to claim 1, in which said exit passage itself is funnel-shaped and flaring increasingly radially outwardly thereof.

3. A thread storage disc according to claim 1, which includes: a thread storage section adjacent said wear resistant separable deviating means, and in which said deviating means are of such a contour and location that the inner walls of said exit passage necessarily are approxi mately tangential to the respective adjacent peripheral surfaces of said separable Wear resistant deviating means, those wall portions of said thread storage sections which are adjacent the respective pertaining deviating means being approximately tangential to the peripheral surface of the latter.

References Cited UNITED STATES PATENTS 1,900,037 3/1933 Bochmann et al. N 5758.84 2,560,848 7/1951 Cochran 5758.84 3,362,151 1/1968 Franzen 5758.84

JOHN PETRAKES, Primary Examiner 

